Mixer



Nov. 29, 1982. R LEE 1,889,558

MIXER Filed Jan. 8. 1950 5 Sheets-Sheet 1 gmantoz R. F. LEE 1,889,558

MIXER Filed dgl. 8. 1930v 3 Sheets-'Sheet 2 I I I J P05005 LEE no1 mitNov. 29, 1932.

R. F. LEE

Nov. 29, 1932.

MIXER Filed Jan. 8. 1930 5 Sheets-Sheet I5 wwnkoi P06005 .55

Patented Nov. 29, 1932 i UNITED STATES PATENT OFFICE `f RosCOE r. LEE,or rivmnivnronrs, 'INDIANA Application led January 8, 1930.- Serial No;419,231.

This invention relates to mixers of that lclass adapted for general useand primarily for mixing concrete and similarrsubstances and one featureof the invention is the provision of means for rotatably mounting amixing drum on a vehicle so that it may be transported from place toplace, asdesired. A further feature of the invention Vis the l provisionof means for utilizing the propelmixing drum, either'wh'ile the vehicleis sta-` tionary ortraveling over the road. Y

A further feature of the invention is the Yprovision of means within themixing drum 'for thoroughly aigitating and mixing the contents of thedrum, as the drum is rotated. A further feature ofvtheinv'ention is theprovision of means for discharging the contents of the drum by gravity.

mounting the drum on the vehicle, that it may be elevated bodily in anysuitable manner for dumping the contents thereof on. parts Aof abuilding or structure under construction, or' at anytother suitablepoint distant from thevehicle. A A

A further feature ofthe invention is in so mounting the mixing drum thatit may be rotatedin either direction from the driving element for thevehicle.

Other objects and advantages willbe hereinafter more fully set forth andpointed out in the accompanying specification.

In the accompanying drawings which are made a part of this application,Figure l is adiagrammatic elevation of a vehicle with the mixer mountedthereon. Figure 2 is an enlarged elevationV of the mixer and operatingelements therefor, from the rear of the vehicle. j

Figure 3is a sectional view thereof as seen along line 3-'-3,Fig. 2.

Figure 4 is an enlarged detail side eleva-v tion of a portion of thedriving mechanism for the mixer drum, and,

Figure 5 is a section thereofas seen along "line 5 5, Fig. 4.

Referring to the drawings in which similarreferencel numerals designatecorresponding parts throughout the several views, the nuling means forthe vehicle for rotating the v A- further feature ofthe invention is inso t meral-l designates lthe'chassis of a vehicle, in this instance atruck, and 2 indicates a power takeoffy associated with the main powertransmitting element of the vehicle (not shown). Y Y Extendingtransversely of the chassis `1 are supporting bars 3 and 4, the bar 3extending entirely across the chassis, while the bar 4 is made in twosectionssaid bars 3 and 4 supporting longitudinally extending bars 5 and60 6, which are preferably arranged in pairs.V Mounted on the bars 5 and6 are Vbearings 7 and 8, in which are mounted shafts 9 and 10, lsaidbearings being arranged in pairs on the bars 5 .and 6 to accommodatesupporting wheels 11, each of which is provided with a peripheralchannel'12, for the reception of track rails 18, surrounding the mixingdrum 14. l

Thedrum 14 comprises' an elongated hol- 70 low body portion withtapering, substantially i cone shaped ends l5, so that the contents ofthe drum will moveby gravity towards the longitudinal center of the drumand dis- '.Charge through an opening 16 in the Ahorizontal wall of thedrum. The opening 16 has a closure erdoor 17, hinged at oneend thereofto the frame 18, surrounding the opening 16, the two side edgeS of thedoor havin flanges 19 for` Vguiding the contents of the 80 drum into vachute 20 attached vto the rear end A of the chassis 1. To insure thatthe mixture will readily flow from all parts of the drum, when the door17 is opened, guide plates 21 are extended from the apex ends of thetapered ends of the drum 14 to the edges of,

the opening` 16.

The shaftv 9 is positively driven in either direction, from the powertakeoff 2, through the medium of a sprocket chain 22, which passesarounda sprocketv wheel 23,V associated with the power takeoff 2andaround a similar sprocket 24 on .the shaft 9 and in order topositively drive the drum 14, the

\ flanges on the supporting wheels 11 are pro- .vided with a pluralityof notches 25, with` which cooperate pins 26 extending transverselythrough the webs of the track rails 13, nuts 27 being provided forsecurely an- 100 g choring the pins to the rails The drum 14 hasfrictional contact with the supporting wheels 11, so that by extendingany suitable hoisting cables or the like, around the drum between thetrack rails 13, the drum may be lifted bodily from the truck chassis andsuspended over parts of a building or other structure and then dumped byopening the door 17, thus avoiding the necessity of providing expensiveelevators for conveying the contents of the drum to an elevatedposition.

In order to thoroughly mix the contents of the drum 14, a. plurality ofagitating blades 28 are arranged in series within the drum, said bladesbeing so arranged that when the drum is rotated, the mixture within thedrum will be constantly moved from end portions of the drum towards thecenter thereof, thus thoroughly mixing the various ingredients used.

Any suitable means may be employed for retaining the door 17 in closedposition, in this instance latches 29, which are fixed to a shaft 30 onthe end of the frame 18, said latches being held in closed position bymeans of springs 31, one of the latches having a handle 32 for releasingsaid latches, when the contents of the drum is to be dumped, or when thedoor 17 is to be opened to fill the drum.

In the event the mixture, when being dumped from the drum 14, issluggish and slow in discharging from the chute 20, the drum may beslightly rotated, which will cause the door 17 to move downwardlythrough the chute and act as a scoop for expelling the mixture from thechute.

In operating the device, a. quantity of substances to be mixed areentered into the drum 14, and owing to the construction of the drum andthe omission of a central shaft therethrough, the drum may be filled toalmost its capacity. If the mixture is to be transported, the drivingmeans for the vehicle is set in motion, which at the same time sets upmotion of the power take-off mechanism, thus imparting rotating motionto the drum, and such motion continues so long as the vehicle is beingdriven.

It will be understood, of course, that the mixer may be operated throughthe power takeoff without driving the vehicle, the transmission to thedriving wheels of the vehicles being disconnected in the usual manner.

Vhilc the description and drawings illustrate in a general way certaininstrumentalities which may be employed in carrying the invention intoeffect, it is evident that many modifications may be made in the variousdetails without departing from the scope of the appended claims, itbeing understood that the invention is not restricted to the particularexamples herein described.

What I claim is:

1. In combination, a drum, a port located in the peripheral surface ofsaid drum, a door pivoted on said drum for closing said port, a chutemounted adjacent said drinn and registering with said door, said doorbeing proportioned to lie, when opened, with its free end in said chute,and means for oscillating said drum about its axis whereby the free endof said door is caused to reciprocate in said chute.

2. A mixer comprising a drum mounted for rotation on a substantiallyhorizontal axis, means for rotating said drum in opposite directions,and means in said drum operable, upon rotation in one direction, toagitate the contents of said drum and to move the same toward the endsof said drum, and operable, upon rotation of said drum in the oppositedirection, to agitate the contents of said drum and to move the sametoward the axial center of said drum.

3. A mixer comprising a cylindrical mixing drum mounted for rotation ona substantially horizontal axis and provided at its opposite ends withheads formed as truncated cones, said drum being formed with an openingin its cylindrical wall substantially at the axial center thereof, adoor normally closing said opening, means for rotating said drum inopposite directions, means in said drum providing plane surfaces havinga width substantially equal to the peripheral width of said opening andextending from the apices of said heads to the adjacent edges of saidopening, and means in said drum operable, upon rotation in onedirection, to agitate the contents of said drum and to move the sametoward the ends of said drum, and operable, upon rotation of said drumin the opposite direction, to agitate the contents of said drum and tomove the same toward the axial center of said drum.

4. A mixer comprising a horizontally extending mixing drum having aningress or egress opening in the wall thereof, means for rocking saiddrum, a door for normally closing said opening, a member disposed toreceive material discharged from said opening, said door when openedlying in the path of the discharging mixture with its free edge slidablysupported on said member whereby, when the drum is rocked, said doorwill act as a scoop to propel such mixture forwardly along the surfaceof said member.

5. A mixer comprising a horizontally extending mixingdrum havingsubstantially cone shaped ends and also having an opening in theperipheral wall thereof, means for rocking said drum, a framesurrounding said opening, a door hinged to said frame for normallyclosing said opening, a member positioned to receive material dischargedfrom said opening7 said door, when opened, cooperating with said memberto forward the discharging mixture along the surface of said member whena rocking action is imparted tio the drum,l means for normally retainingSaid doorin closed position, means within said drum for agitating thecontents thereof and moving the same toward the longitudinal center ofsaid drum, and means for frictionally supporting said drum.

In testimony whereof, Ihave hereunto set my hand on this the 24th day ofDecember, Y

ROSCOE F. LEE.

